90717-03-6Relevant articles and documents
Quinmerac and preparation method thereof
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Paragraph 0041-0064, (2021/02/24)
The invention relates to the field of herbicide synthesis, particularly to quinmerac and a preparation method thereof. The method includes the steps: in the presence of a catalyst, carrying out an oxidation reaction on 3,8-dimethyl-7-chloroquine as a raw material, carboxylic acid as a solvent and oxygen-containing gas as an oxidizing agent, wherein the catalyst is one or more of a cobalt metal compound, a manganese metal compound and a vanadium metal compound. According to the method, a large amount of waste acid and waste water can be prevented from being generated, environmental protection is achieved, and the three-waste treatment cost is greatly reduced; and the method has the advantages of mild reaction conditions, simple post-treatment and high product purity and yield, and is very suitable for industrial production.
PROCESS FOR THE PREPARATION OF QUINMERAC
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Page/Page column 8, (2020/01/24)
It is an object of the present invention to provide a novel and advantageous process for commercially preparing quinmerac.
Herbicidal mixtures having a synergistic effect
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, (2008/06/13)
PCT No. PCT/EP96/03996 Sec. 371 Date Feb. 17, 1998 Sec. 102(e) Date Feb. 17, 1998 PCT Filed Sep. 12, 1996 PCT Pub. No. WO97/10714 PCT Pub. Date Mar. 27, 1997A composition comprising at least one sulfonylurea of the formula I wherein R1 is substituted alkyl; halogen; a group ER6 (E=O, S or NR7); COOR8; NO2; S(O)oR9; SO2NR10R11; or CONR10R11; R2 is hydrogen, alkyl, alkenyl, alkynyl, halogen, alkoxy, haloalkoxy, haloalkyl, alkylsulfonyl, nitro, cyano or alkylthio; R3 is F, CF3, CF2Cl, CF2H, OCF3, OCF2Cl, or, if R1 is CO2CH3 and R2 is simultaneously fluorine, R3 is Cl, or, if R1 is CH2CF3 or CF2CF3, R3 is methyl, or, if R4 is OCF3 or OCF2Cl, R3 is OCF2H or OCF2Br; R4 is alkoxy, alkyl, alkylthio, alkylamino, dialkylamino, halogen, haloalkyl or haloalkoxy; and R5 is hydrogen, alkoxy or alkyl; or an enviromentally compatible salt of I, and an aryloxyalkanoic acid selected from the group consisting of 2,4-D, 2,4-DB, clomeprop, dichlorprop, dichlorprop-P, dichlorprop-P (2,4-DP-P), fenoprop (2,4,5-TP), fluoroxypyr, MCPA, MCPB, mecoprop, mecoprop-P, napropamide, napropanilide, triclopyr, and an enviromentally compatible salt thereof exhibits a synergistic herbicidal effect.